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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.databinding.tool.expr;
     18 
     19 import android.databinding.tool.processing.ErrorMessages;
     20 import android.databinding.tool.reflection.ModelAnalyzer;
     21 import android.databinding.tool.reflection.ModelClass;
     22 import android.databinding.tool.util.L;
     23 import android.databinding.tool.util.Preconditions;
     24 
     25 import java.util.ArrayList;
     26 import java.util.List;
     27 
     28 public class IdentifierExpr extends Expr {
     29     String mName;
     30     String mUserDefinedType;
     31     IdentifierExpr(String name) {
     32         mName = name;
     33     }
     34 
     35     public String getName() {
     36         return mName;
     37     }
     38 
     39     /**
     40      * If this is root, its type should be set while parsing the XML document
     41      * @param userDefinedType The type of this identifier
     42      */
     43     public void setUserDefinedType(String userDefinedType) {
     44         mUserDefinedType = userDefinedType;
     45     }
     46 
     47     @Override
     48     protected String computeUniqueKey() {
     49         return join(mName, super.computeUniqueKey());
     50     }
     51 
     52     public String getUserDefinedType() {
     53         return mUserDefinedType;
     54     }
     55 
     56     @Override
     57     public boolean isDynamic() {
     58         return true;
     59     }
     60 
     61     @Override
     62     protected ModelClass resolveType(final ModelAnalyzer modelAnalyzer) {
     63         Preconditions.checkNotNull(mUserDefinedType, ErrorMessages.UNDEFINED_VARIABLE, mName);
     64         return modelAnalyzer.findClass(mUserDefinedType, getModel().getImports());
     65     }
     66 
     67     @Override
     68     protected List<Dependency> constructDependencies() {
     69         return new ArrayList<>();
     70     }
     71 
     72     @Override
     73     protected String asPackage() {
     74         return mUserDefinedType == null ? mName : null;
     75     }
     76 }
     77